whilst I'm running rich I was spitting and banging and could not rev it up--all injector boots disintergrated and all injector plugs were coroded--(think its been standing a long time)no5 was welded solid with corosion --I am waiting for new injector plugs to be delivered---tried to get workshop manual from 1-800-for-merc --no luck --got told the old cd story--QUESTION --so M.B.DOC help me out here---- where is the cold start valve and the M.A.P.sensor--I feel I will have to replace N05 injector --but as soon as plugs arrive I will try it before replacing it